//
//  VisitorView.swift
//  Weibo1
//
//  Created by apple on 15/12/26.
//  Copyright © 2015年 idcast. All rights reserved.
//

import UIKit

/// 访客视图 处理用户未登陆的界面显示
class VisitorView: UIView {

    //MARK: 设置试图信息
    func setupInfo(imageName: String?, title: String) {
    
        messageLabel.text = title
        //如果图片名称 为 nil 说明是首页 直接返回
        guard let imgName = imageName else {
            //播放动画
            startAnim()
        
            return
        }
        
        iconView.image = UIImage(named: imgName)
        
        //隐藏小房子
        homeIconView.hidden = true
        
        //将遮罩图像移动到最底层
        sendSubviewToBack(maskIconView)
    }
    /// 开启首页转轮动画
    private func startAnim() {
        
     let anim = CABasicAnimation(keyPath: "transform.scale")
        anim.toValue = 1.5 //* M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 2
        anim.autoreverses = true

        // 用在不断重复的动画上，当动画绑定的图层对应的视图被销毁，动画会自动被销毁
        anim.removedOnCompletion = false
        
        // 添加到图层
        iconView.layer.addAnimation(anim, forKey: nil)
        
}

    ///通过纯代码创建
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
        
    }
  /// 通过XIB 或SB 创建 调用
    required init?(coder aDecoder: NSCoder) {
//        fatalError("init(coder:) has not been implemented")
        super.init(coder: aDecoder)
        setupUI()
    }
   
    ///MARK: 懒加载控件
    ///图标
    private lazy var iconView: UIImageView = UIImageView(imageName: "visitordiscover_feed_image_smallicon")
    ///遮罩图像
    private lazy var maskIconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
    ///小房子
    private lazy var homeIconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    ///消息文字
    private lazy var messageLabel: UILabel = UILabel(title: "关注一些人，回这里看看有什么惊喜关注一些人，回这里看看有什么惊喜")
    ///注册按钮 
     lazy var registerButton: UIButton = UIButton(title: "注销", color: UIColor.orangeColor(), imageName: "common_button_white_disable")
    /// 登录按钮
     lazy var loginButton: UIButton = UIButton(title: "登录", color: UIColor.darkGrayColor(), imageName: "common_button_white_disable")
    

}

extension VisitorView {

    ///设置界面
    
    private func setupUI() {
    
    
        //1 添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(homeIconView)
        addSubview(maskIconView)
        addSubview(messageLabel)
        addSubview(registerButton)
        addSubview(loginButton)
    
        
        //2 设置自动布局
        for v in subviews {
        
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        //1> 图标
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1.0, constant: -60))
        //2> 小房子
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterY, relatedBy: .Equal, toItem: iconView, attribute: .CenterY, multiplier: 1.0, constant: 0))
        //3> 消息文字
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Top, relatedBy: .Equal, toItem: iconView, attribute: .Bottom, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 244))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        
        //4> 注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Left, relatedBy: .Equal, toItem: messageLabel, attribute: .Left, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Top, relatedBy: .Equal, toItem: messageLabel, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        // 5> 登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Right, relatedBy: .Equal, toItem: messageLabel, attribute: .Right, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Top, relatedBy: .Equal, toItem: messageLabel, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        // 6. 遮罩图像
        /**
        VFL : 可视化格式语言
        
        H 水平方向
        V 垂直方向
        | 边界
        [] 包装控件
        views: 是一个字典 [名字: 控件名] - VFL 字符串中表示控件的字符串
        metrics: 是一个字典 [名字: NSNumber] - VFL 字符串中表示某一个数值
        */
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[mask]-0-|", options: [], metrics: nil, views: ["mask": maskIconView]))
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[mask]-(btnHeight)-[regButton]", options: [], metrics: ["btnHeight": -36], views: ["mask": maskIconView, "regButton": registerButton]))
        
        // 设置背景颜色 - 灰度图 R = G = B，在 UI 元素中，大多数都使用灰度图，或者纯色图(安全色)
        backgroundColor = UIColor(white: 237.0 / 255.0, alpha: 1.0)
        
        
    }
    
}